I'm thinking along the lines of a hotel, a 2.5 hr drive isn't too appealing, and the trains are nearly £70! Thats a bit of an outlay so close to xmas.
There are some really good tips on here so thanks everyone.
I'm probably not much good with tips myself being relatively new to running (just under a year) and and have only been to Birmingham a handful of times.
The only tip I can offer is if you are travelling from S Wales (like me) the train direct from Newport actually stops at the university on the way to New Street, so could save some time and money.
It looks like it will be a dodgy M5 travelodge for me.
Absolutely can't wait now. Less than a week to go. 

